201 8 06:00 p 2/100?4/9/2018 10:54 AM Print CalculatorPeriodic Table estion 10 o

Question

201 8 06:00 p 2/100?4/9/2018 10:54 AM Print CalculatorPeriodic Table estion 10 of 25 Sapling Learning A bar magnet is dropped vertically through a long piece of copper pipe. What effect does the falling magnet have on the pipe? Select all that apply The falling magnet.. causes the copper pipe to produce a magnetic field. causes the copper pipe to acquire a net charge. causes an electric current to flow in the copper pipe. has no effect on the copper pipe. What effect does the presence of the copper pipe have on the magnet? Select all that apply The copper pipe... has no effect on the magnet. is attracted to and sticks to the magnet. causes the magnet to fall more quickly. causes the magnet to fall more slowly. acer

Explanation / Answer

1. When a bar magnet is droopes vertically through a piece of copper pipe,

lt produces electromagnetic induction.

Thus, the falling magnet-

(a) causes the copper pipe to produce a magnetic field.

(c) causes an electric current to flow in copper pipe.

2.

Effect of presence of copper pipe have on magnet-

According to Lenz's law induced current in copper pipe will oppose the change in magnetic flux and so it opposes

the entry of falling magnet.

Hence, The magnet to fall more slowly (d).

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